Use enzyme button click for the the account creation test after updating the SDK

[pcowgill]

[marcelomorgado]

Actually, that isn't related to Expo SDK version.

Problem:
Enzyme.simulate('click') doesn't support async handlers (and doesn't will).
Refs: enzymejs/enzyme#867 (comment) and enzymejs/enzyme#898 (comment).

The Enzyme team recommends to call the handlerFunction directly for now.
It works well but exposes to test case an internal behavior of component that isn't a best practice.

The final solution will come when they add the invoke function to their API.
A PR already exists but it stills as a WIP: enzymejs/enzyme#1856

[pcowgill]

@marcelomorgado In the new SDK version we published, I think the function in question isn't async anymore, right?

[pcowgill]

Then again, I could see account creation getting slower again and changing to async depending on how we handle tasitlabs/tasit-sdk#24

[marcelomorgado]

@marcelomorgado In the new SDK version we published, I think the function in question isn't async anymore, right?

Right

Then again, I could see account creation getting slower again and changing to async depending on how we handle tasitlabs/TasitSDK#24

👍

Also, related to: #42